ETC 41530 Source Four 15-30-Degree Ellipsoidal | Color: Black, Connector: Edison (Parallel-blade U-ground)ETC's 41530 Source Four 15 30 Degree Ellipsoidal combines the energy saving power of the patented HPL lamp, with a dichroic reflector and optical quality lenses. That means your gels, patterns and shutters last longer and your performance space stays cooler. No other light offers such optical brilliance. Source Four's revolutionary technology gives you a clean white beam for unequaled imaging, crisp pattern projection, and a bright, even field. The